plu·​ton·​ic plü-ˈtä-nik How to pronounce plutonic (audio)
: formed by solidification of magma deep within the earth and crystalline throughout
plutonic rock
often capitalized : plutonian

Examples of plutonic in a Sentence

Recent Examples on the Web Evolution of an upper crustal plutonic-volcanic plumbing system: Insights from high-precision U-Pb zircon geochronology of the intracaldera tuff and intrusions in Silver Creek caldera, Arizona, USA by T. Zhang and others. Erik Klemetti, Discover Magazine, 11 Dec. 2010 Simon O’Neill unleashed a gleaming, live-steel tenor, and Franz-Josef Selig’s plutonic bass made for an imposing Hunding. Globe Staff,, 29 July 2019

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'plutonic.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


Latin Pluton-, Pluto

First Known Use

1596, in the meaning defined at sense 2

Time Traveler
The first known use of plutonic was in 1596

Dictionary Entries Near plutonic

Cite this Entry

“Plutonic.” Dictionary, Merriam-Webster, Accessed 7 Dec. 2023.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!